Hydrothermal synthesis of CuO flake-like structures for efficient degradation of model pollutant dye under solar light illumination and improved hydrogen evolution via catalytic NaBH4 hydrolysis
Arakelyan D. Abisheva D. Rustembekkyzy K. Kerim T. Atabaev T.S.
April 2026Elsevier B.V.
JCIS Open
2026#21
This study explores the synthesis of flake-like CuO structures via a hydrothermal route and examines their applicability in wastewater treatment through model dye degradation and in hydrogen evolution boosting via catalytic hydrolysis of NaBH4. Under optimized conditions, involving low CuO dosage and minimal H2O2 addition, nearly complete removal of Methylene blue (MB) dye (Co = 3 × 10−5 M) was observed within 30 min with apparent constant rate of k = 0.1124 min−1. The prepared flake-like CuO structures exhibit significant promise for wastewater treatment owing to their low production cost, efficient performance with minimal CuO and H2O2 input, excellent recyclability, and enhanced apparent rate constant as compared to other CuO-based photocatalysts. Furthermore, the introduction even of a small amount of CuO flake-like structures significantly enhanced the H2 evolution efficiency during the catalytic hydrolysis of NaBH4. Overall, the prepared CuO flake-like structures exhibit excellent potential for wastewater photocatalytic treatment and for improved hydrogen evolution via sodium borohydride hydrolysis.
CuO , Flake-like structures , Hydrogen evolution , NaBH4 hydrolysis , Photocatalyst , Wastewater treatment
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Institute of Functional Materials, Astana, Kazakhstan
Department of Chemistry, Nazarbayev University, Astana, Kazakhstan
Institute of Functional Materials
Department of Chemistry
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026